Center-Line Flanged Butterfly Valve

Center-Line Flanged Butterfly Valve — Suzhou Yueda Valve Co., Ltd

Center-Line Flanged Butterfly Valve

The center-line flanged butterfly valve has an integrally flanged body that eliminates the need for separate pipe flange gaskets and simplifies installation in demanding environments.

Typical specifications of Center-Line Flanged Butterfly Valve
Nominal SizeDN50 – DN1200
Pressure RatingPN10 / PN16 / JIS 5K/10K
Body MaterialDuctile iron GGG50, cast steel WCB
DiscDuctile iron, SS304 / SS316, aluminum bronze
SeatEPDM, NBR
Temperature-10 °C to +120 °C
ConnectionFlanged, DIN / ANSI / JIS drilling
MediumWater, seawater, HVAC, ballast systems
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Product Description

The center-line flanged butterfly valve has an integrally flanged body that eliminates the need for separate pipe flange gaskets and simplifies installation in demanding environments. The concentric (center-line) disc design keeps the stem centered in the bore, providing a resilient, bidirectional seal with minimal pressure loss. Its rigid flanged construction makes it especially suitable for shipbuilding, offshore platforms, power plants and pumping stations where vibration and pipe stress are present.

Key Features & Advantages

  • Integrally flanged body — no wafer clamping needed, vibration resistant
  • Concentric design with full EPDM liner for bidirectional sealing
  • Anti-blowout stem design for operational safety
  • Marine-grade coating options for offshore and coastal plants
  • ISO 5211 mounting pad for lever, gear or actuated operation
  • Certified to EN1074-2 and WRAS for waterworks duty

Applications

The Center-Line Flanged Butterfly Valve is widely applied in municipal water supply and drainage networks, water treatment plants, petrochemical and coal-chemical plants, power stations, heating and gas supply systems, HVAC and building services, sewage renovation projects and waste recycling integrated systems. It is also suited to demanding sectors such as floating production storage units, onshore exploration & production, deep-sea extraction, LNG terminals, oil & gas pipeline transmission, and loading & storage systems.

Quality & Certification

Every valve is manufactured under our ISO 9001:2015 quality management system. Products carry UK WRAS hygiene approval and European EN1074 certification, and all processes — casting, machining, spraying, assembly, testing, inspection and packaging — are controlled and traceable. Custom materials, pressure classes and actuation packages are available on request.

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